CN110036741A - Fertilization control system and control method - Google Patents
Fertilization control system and control method Download PDFInfo
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- CN110036741A CN110036741A CN201910248145.6A CN201910248145A CN110036741A CN 110036741 A CN110036741 A CN 110036741A CN 201910248145 A CN201910248145 A CN 201910248145A CN 110036741 A CN110036741 A CN 110036741A
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- motor
- driven valve
- fertilization
- flow
- fertilising
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/007—Metering or regulating systems
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Fertilizing (AREA)
Abstract
The invention discloses a kind of fertilization control system and control methods, are related to agricultural irrigation technique field.Main technical schemes of the invention are as follows: fertilization control system comprising: the first motor-driven valve, control unit and electronic flowmeter, first motor-driven valve is arranged on main water supply pipe, for adjusting the flow of the main water pipeline；Described control unit is electrically connected with first motor-driven valve, for calculating the estimated opening and closing degree applied fertilizer flow and control first motor-driven valve；The electronic flowmeter is arranged on the outlet pipe of fertilizer spreading tank, and the electronic flowmeter is electrically connected with the control unit, for detecting the water flow of the fertilizer spreading tank；Wherein, described control unit controls the opening and closing degree of first motor-driven valve until the practical water flow of the fertilizer spreading tank is equal with the estimated fertilising flow；The present invention realizes Automatic Control fertilising, guarantees fertilising stability of flow and even concentration.
Description
Technical field
The present invention relates to agricultural irrigation technique field more particularly to a kind of fertilization control system and control methods.
Background technique
Trickle irrigation is the water that will have certain pressure, through pipe network and outlet conduit (drip irrigation zone) or water dropper with water droplet after filtering
Form slowly uniformly instills a kind of irrigation method of soil near plant root；The advantage of drip irrigation technique is in power-assisted liquid manure one
Important function is played on body；Pressure differential tank fertilization mode is most common liquid manure integral type fertilising side in drip irrigation system
Formula, its working principle is that be to form pressure difference between fertilizer spreading tank Inlet and outlet water by the opening degree for adjusting control valve on main water pipeline, into
And fertilizer in tank is dissolved and brings drip irrigation zone into and synchronizes trickle irrigation and fertilising.
But the opening degree of control valve is not easy to control on pressure differential tank, it will once the pressure difference of fertilising early period is excessive
Most of fertilizer is dissolved in a short time and trickle irrigation is in farmland, and fertilizer has remained little in the tank body in later period, causes to apply fertilizer
Concentration of fertilizer is extremely low in the process or even is entirely clear water it is also possible that cause the fertilising concentration in same fertilising region not
, the problems such as situation of fertilization is bad and fertilizer wastes.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of fertilization control system and control method, main purpose is to solve to pass
System pressure differential tank fertilising speed is not easy to control to lead to the problem of density unevenness, situation of fertilization are bad and fertilizer wastes of applying fertilizer.
In order to achieve the above objectives, present invention generally provides following technical solutions:
On the one hand, the embodiment of the invention provides a kind of fertilization control systems comprising:
First motor-driven valve, first motor-driven valve is arranged on main water supply pipe, for adjusting the stream of the main water pipeline
Amount；
Control unit, described control unit are electrically connected with first motor-driven valve, flow and are controlled for calculating estimated apply fertilizer
Make the opening and closing degree of first motor-driven valve；
Electronic flowmeter, the electronic flowmeter are arranged on the outlet pipe of fertilizer spreading tank, and the electronic flowmeter and institute
Control unit electrical connection is stated, for detecting the water flow of the fertilizer spreading tank；
Wherein, described control unit controls practical water outlet of the opening and closing degree up to the fertilizer spreading tank of first motor-driven valve
Flow is equal with the estimated fertilising flow.
The object of the invention to solve the technical problems also can be used following technical measures and further realize；
Optionally, a kind of fertilization control system above-mentioned, further includes conductivity sensor；
The conductivity sensor is arranged on the outlet pipe of the fertilizer spreading tank, and is electrically connected with the control unit, and uses
In the practical water outlet conductivity for detecting the fertilizer spreading tank；
Wherein, the practical water outlet conductivity is equal with default conductivity, then stops applying fertilizer.
Optionally, a kind of fertilization control system above-mentioned, further includes timing module；
The timing module is electrically connected with the control unit, for detecting practical fertilization time；
Wherein, the practical fertilization time then stops applying fertilizer with it is expected that fertilization time is equal.
Optionally, a kind of fertilization control system above-mentioned further includes the second motor-driven valve, third motor-driven valve, second pressure biography
Sensor and third pressure sensor；
Second motor-driven valve and the second pressure sensor are arranged on the water inlet pipe of the fertilizer spreading tank, for controlling
The opening and closing of the water inlet pipe and the pressure for detecting the water inlet pipe；
The third motor-driven valve and the third pressure sensor are arranged on the outlet pipe of the fertilizer spreading tank, for controlling
The opening and closing of the outlet pipe and the pressure for detecting the outlet pipe.
Optionally, a kind of fertilization control system above-mentioned further includes data input module and motor-driven valve control module；
Data input module setting described control unit and the electronic flowmeter, the conductivity sensor it
Between；
Motor-driven valve control module setting described control unit and first motor-driven valve, second motor-driven valve,
Between the third motor-driven valve.
Optionally, a kind of fertilization control system above-mentioned further includes input and display module；
The input and display module are electrically connected with the control unit, by inputting based on into described control unit
Calculate the relevant parameter of estimated fertilising flow.
On the other hand, the embodiment of the present invention provides a kind of control method of fertilization control system comprising following steps:
Calculate estimated fertilising flow；
The opening and closing degree for adjusting the first motor-driven valve is equal with the estimated fertilising flow to practical fertilising flow.
Optionally, in the method above-mentioned for calculating fertilising flow:
Input dose G, Kg；Apply fertilizer tank volume L, rises；
According to tIt applies=0.95 × G0.65×ΔP-0.98, tIt applies, the estimated fertilization time of h calculating；Wherein, Δ P is pressure difference, takes 0.01
~0.02MPa；
And according to Q=4L/ (1000 × tIt applies), Q, m3/ h calculates estimated fertilising flow.
Optionally, the opening and closing degree above-mentioned for adjusting the first motor-driven valve expects fertilising flow with described to practical fertilising flow
In equal method:
The conductivity that conductivity sensor detects practical fertilizer spreading tank water outlet is equal with the conductivity of iirigation water source, then stops applying
Fertilizer.
Optionally, the aforementioned opening and closing degree for adjusting the first motor-driven valve is to practical fertilising flow and the estimated flow phase of applying fertilizer
Deng method in；
Timing module detects practical fertilization time with it is expected that fertilization time is equal, then stops applying fertilizer.
By above-mentioned technical proposal, fertilization control system of the present invention and control method at least have the advantage that control is single
Member calculates estimated fertilising flow according to fertilising control program, and then controls the practical fertilising of opening and closing extent control of the first motor-driven valve
Flow, until practical fertilising flow no longer adjusts the first motor-driven valve and is opened and closed degree with it is expected that fertilising flow is equal, it is whole-process automatic
Control fertilising, and regulated fertilization flow is self-consistent, guarantees that front and back fertilising concentration is consistent, prevents fertilising density unevenness, waste fertilizer
The problem of material.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of fertilization control system provided in an embodiment of the present invention；
Fig. 2 is a kind of another structural schematic diagram of fertilization control system provided in an embodiment of the present invention；
Fig. 3 is a kind of yet another construction schematic diagram of fertilization control system provided in an embodiment of the present invention；
Fig. 4 is that the cooperation implementation structure of a kind of fertilization control system and pressure differential tank provided in an embodiment of the present invention is shown
It is intended to；
Fig. 5 is a kind of flow chart of the control method of fertilization control system provided in an embodiment of the present invention.
Specific embodiment
In order to which the present invention is further explained to reach the technical means and efficacy that predetermined goal of the invention is taken, below in conjunction with
Attached drawing and preferred embodiment, to a kind of fertilization control system proposed according to the present invention and control method its specific embodiment,
Structure, feature and its effect, detailed description is as follows.In the following description, different " embodiment " or " embodiment " refers to not
It must be the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by any suitable form
Combination.
The technical solution of the embodiment of the present invention is in order to solve the above technical problems, general thought is as follows:
Embodiment 1
With reference to attached drawing 1 and attached drawing 4, fertilization control system provided in an embodiment of the present invention comprising the first motor-driven valve 1, control
Unit 2 and electronic flowmeter 3 processed；First motor-driven valve 1 is arranged on main water supply pipe 4, for adjusting the water main
The flow in road 4；Described control unit 2 is electrically connected with first motor-driven valve 1, for calculating estimated apply fertilizer described in flow and control
The opening and closing degree of first motor-driven valve 1；The electronic flowmeter 3 is arranged on the outlet pipe 5 of fertilizer spreading tank 6, and the electronic flow
Meter 3 is electrically connected with described control unit 2, for detecting the water flow of the fertilizer spreading tank 6；
Wherein, described control unit 2 controls reality of the opening and closing degree up to the fertilizer spreading tank 6 of first motor-driven valve 1
Water flow is equal with the estimated fertilising flow.
Specifically, in order to solve, traditional pressure differential tank fertilising speed is not easy to control to lead to apply fertilizer density unevenness, fertilising
The problem of situation is bad and fertilizer wastes, fertilization control system provided in an embodiment of the present invention comprising the first motor-driven valve 1,
Control unit 2 and electronic flowmeter 3；Wherein, first motor-driven valve 1 is a kind of electronic internally piloted valve, including electronic execution
Device and valve realize the on and off of valve by Electric Actuator, that is to say, that pass through control unit 2 and Electric Actuator electricity
It connects to carry out the control of valve on and off；Described control unit 2 inputs to be able to carry out parameter, calculation procedure programs and will
The controller that data were compared and carried out bias adjustment with reference value is collected, preferably proportional, integral-is micro- in present invention implementation
Sub-controller (PID controller) is the common feedback loop component in this field, by the data being collected into and the parameter of input into
Row compares, and the data of regulating system reach or be maintained at reference value, that is to say, that inputs in second control unit 2 estimated
Fertilising flow or parameters in series relevant to estimated fertilising flow are calculated pre- by the fertilising controlling extent in control unit 2
Meter fertilising flow, then adjusted by the opening and closing degree that control unit 2 controls the first motor-driven valve 1 from the fertilizer spreading tank 6 and flowed out
Water flow be that practical fertilising flow reaches and be maintained at the default fertilising flow, and with the fertilising flow persistently apply fertilizer to
Fertilising terminates；The electronic equipments that the electronic flowmeter 3 is well known in the art, for measuring the volume flow of conducting liquid, institute
The outlet pipe 5 that electronic flowmeter 3 is stated in the fertilizer spreading tank 6 is electrically connected with described control unit 2, for detecting practical fertilising stream
Amount.
According to above-mentioned listed, fertilization control system of the present invention and control method at least have the advantage that control unit 2
Estimated fertilising flow is calculated according to fertilising control program, and then the practical fertilising stream of the opening and closing extent control for controlling the first motor-driven valve 1
Amount, until practical fertilising flow no longer adjusts 1 opening and closing degree of the first motor-driven valve, whole-process automatic control with it is expected that the flow that applies fertilizer is equal
System fertilising, and regulated fertilization flow is self-consistent, guarantees that front and back fertilising concentration is consistent, prevents fertilising density unevenness, waste fertilizer
The problem of
The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes
System, it is specific to understand for example, A and/or B are as follows: it can simultaneously include A and B, can be with individualism A, it can also be with individualism
B can have above-mentioned three kinds any middle situations.
Embodiment 2
Further, with reference to attached drawing 2 and attached drawing 4, one embodiment of the present of invention provides a kind of fertilization control system, is having
Body further includes conductivity sensor 7 and timing module 8 in implementing；The fertilizer spreading tank 6 is arranged in the conductivity sensor 7
It on outlet pipe 5, and is electrically connected with described control unit 2, for detecting the practical water outlet conductivity of the fertilizer spreading tank 5；The meter
When module 8 be electrically connected with described control unit 2, for detecting practical fertilization time；
Wherein, the practical fertilization time with it is expected that fertilization time is equal, then stop fertilising wherein or the practical water outlet
Conductivity is equal with default conductivity, then stops applying fertilizer.
Specifically, in the technical solution that the present invention takes, adding conductivity sensor 7 for perfect entire fertilising process
(EC sensor) and timing module 8, wherein the conductivity sensor 7 (EC sensor) is the conductance for measuring various solution
Property or solution ion concentration sensor, heretofore described conductivity sensor 7 (EC sensor) be used to measure practical fertilising
Concentration of fertilizer illustrate the fertilizer spreading tank if practical concentration of fertilizer is approximate or equal for water concentration in main water supply pipe 4
Fertilizer will be used up in 6, then the control of described control unit 2 at this time stops fertilising；
Furthermore the timing module 8 is used to detect practical fertilization time, inputs or calculates in described control unit 2
It is expected that fertilization time, the estimated fertilization time is preset or is calculated according to dose or fertilization area, thus
When the practical fertilization time and the estimated fertilization time are close or equal, then illustrate that the fertilizer in the fertilizer spreading tank 6 will
It uses up, and then stops fertilising.
Embodiment 3
Further, with reference to attached drawing 3 and attached drawing 4, one embodiment of the present of invention provides a kind of fertilization control system, is having
Body further includes the second motor-driven valve 9, third motor-driven valve 10, second pressure sensor 11 and third pressure sensor 12 in implementing；
Second motor-driven valve 9 and the second pressure sensor 11 are arranged on the water inlet pipe 13 of the fertilizer spreading tank 6, use
In controlling the opening and closing of the water inlet pipe 13 and detect the pressure of the water inlet pipe 13；
The third motor-driven valve 10 and the third pressure sensor 12 are arranged on the outlet pipe 5 of the fertilizer spreading tank 6, use
In controlling the opening and closing of the outlet pipe 5 and detect the pressure of the outlet pipe 5.
Specifically, not influencing in due course cooperation main water supply pipe 4 and the process applied fertilizer, the technical side that the present invention takes
In case, the second motor-driven valve 9 and second pressure sensor 11 are set on the water inlet pipe 13 of the fertilizer spreading tank 6, in the fertilizer spreading tank 6
Outlet pipe 5 on third motor-driven valve 10 and third pressure sensor 12 are set；Second motor-driven valve 9 and the third motor-driven valve
10 is identical as 1 structure of the first motor-driven valve, the two cooperate under the control of the control unit 2 with first motor-driven valve 1 into
The beginning and stopping of row fertilising, wherein first motor-driven valve 1 is full-gear before fertilising starts, for whole drip irrigation system into
Row supplies water, and when fertilising starts, described control unit 2 controls second motor-driven valve 9 and the third motor-driven valve 10 is all turned on,
Water is introduced into the fertilizer spreading tank 6 by water inlet pipe 13 and draws the dissolution of internal fertilizer by outlet pipe 5 again, is further adjusted at this time
It saves the opening degree of the motor-driven valve 1 and reaches estimated fertilising flow (process refers to above-described embodiment content), then exist
When stopping fertilising, 1 standard-sized sheet of the first motor-driven valve described in secondary control, the second motor-driven valve 9 and third motor-driven valve 10 are complete again for control unit 2
It closes, returns the state of starting dripping irrigation water；Usually fertilising is initially to pour water one hour after starting；And the second pressure sensing
Device 11 and the third pressure sensor 12 are detected to water inlet and pressure fertile out, monitor pressure difference preset
In range, if pressure difference is not within the preset range, described control unit 2 is then to second motor-driven valve 9 and described
Third motor-driven valve 10 is suitably adjusted, until pressure difference is within a preset range.
Embodiment 4
Further, with reference to attached drawing 3 and attached drawing 4, a kind of fertilization control system provided in an embodiment of the present invention, specific real
Shi Zhong further includes data input module 14 and motor-driven valve control module 15；
The data input module 14 is arranged in described control unit 2 and the electronic flowmeter 3, the conductivity sensors
Between device 7；
The motor-driven valve control module 15 setting is in described control unit 2 and first motor-driven valve 1, described second electronic
Between valve 9, the third motor-driven valve 10.
Specifically, in order to improve the reliability of precision and execution that system integrally controls, the technical side that the present invention takes
In case, the data input module 14 and the motor-driven valve control module are added between control unit 2 and each controlled device
15,；Wherein the data input module 14 has the function of data acquisition and transmission, and the embodiment of the present invention preferably uses D/A module
That is digital-to-analog input module effectively improves the precision of data input, that is to say, that electronic flowmeter 3, conductivity sensor
The acquisition and transmitting of the 7 even detection datas of second pressure sensor 9 and third pressure sensor 10 improve precision, so that adjusting
Section fertilising flow and stopping fertilising opportunity are more accurate；The function that there is the motor-driven valve control module 15 control signal to receive and send
It can, that is to say, that receive the control signal from control unit 2 and be transferred to the first motor-driven valve 1, the second motor-driven valve 9 and third
Motor-driven valve 10, and then three motor-driven valves are more targetedly controlled, the interference of total system is reduced, the reliable of execution is improved
Property.
Further, fertilization control system provided in an embodiment of the present invention further includes in specific implementation input and display
Module 16；
The input and display module 16 are electrically connected with described control unit 2, are used for inputting into described control unit 2
In the relevant parameter for calculating estimated fertilising flow；
Further include circuit protection module 17, be electrically connected with described control unit 2, for protecting total system circuit.
Specifically, in order to simplify the operation of fertilization control system and improve security performance, the technical solution that the present invention takes
In, input and display module 16 are added, has the function of data input and display, is being preset or inputted parametric procedure
In can simplify operation, avoid in control unit 2 modify program either modify data trouble；The circuit protection module
17 be a kind of technological means well known to those skilled in the art taken circuit protection, can be to power supply and modules
Circuit is protected, and short circuit is prevented.
Embodiment 5
Further, the control method of a kind of fertilization control system provided in an embodiment of the present invention, in specific implementation, packet
Include following steps:
S1, estimated fertilising flow is calculated；
Input dose, fertilising tank volume, water inlet diameter, fertilizer application frequency, iirigation water source electric conductivity value, experience pressure difference etc.
Parameter, control unit 2 calculate estimated fertilization time t automaticallyIt appliesWith estimated fertilising flow Q；
tIt applies=0.95 × G0.65×ΔP-0.98, tIt applies, h；
Q=4L/ (1000 × tIt applies), Q, m3/ h, wherein Δ P is pressure difference, takes 0.01~0.02MPa；
S2, the opening and closing degree for adjusting the first motor-driven valve 1 are equal with the estimated fertilising flow to practical fertilising flow；
S3, automatic or manual stop fertilising.
Further, specific to wrap in the control method of fertilization control system provided in an embodiment of the present invention with reference to attached drawing 5
Include following steps:
101, plus fertilizer is to fertilizer spreading tank 6, opens control unit 2 and inputs parameter preset；
102, the second motor-driven valve 9 and third motor-driven valve 10 are opened and adjusts pressure difference；
103, the first motor-driven valve 1 is adjusted；
104, actual pressure differential Δ P is comparedIt is realWith experience pressure difference Δ P, actual pressure differential Δ PIt is realWithin the scope of experience pressure difference Δ P
105 are then executed, otherwise executes 102；
105, the practical fertilising flow Q of comparisonIt is realWith estimated fertilising flow Q, the practical flow Q that applies fertilizerIt is realReach estimated fertilising flow Q
106 are then executed, otherwise executes 103；
106, practical fertilization time t is comparedShi ShiWith estimated fertilization time tIt applies, practical fertilization time tShi ShiWhen reaching estimated fertilising
Between tIt appliesThen stop applying fertilizer, otherwise executes 107；
107, the electric conductivity value EC of practical fertilizer is comparedIt is realWith iirigation water source electric conductivity value EC, the electric conductivity value EC of practical fertilizerIt is realReach
Iirigation water source electric conductivity value EC then stops applying fertilizer, and otherwise executes 106.
Further, stopping fertilising can also being stopped manually according to the experience of those skilled in the art, i.e., close manually
Close control unit 2.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, because
And can be combined between above embodiments, it is to the above embodiments according to the technical essence of the invention any simply to repair
Change, equivalent variations and modification, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of fertilization control system, characterized in that it comprises:
First motor-driven valve, first motor-driven valve is arranged on main water supply pipe, for adjusting the flow of the main water pipeline；
Control unit, described control unit are electrically connected with first motor-driven valve, flow and control institute for calculating estimated apply fertilizer
State the opening and closing degree of the first motor-driven valve；
Electronic flowmeter, the electronic flowmeter are arranged on the outlet pipe of fertilizer spreading tank, and the electronic flowmeter and the control
Unit electrical connection processed, for detecting the water flow of the fertilizer spreading tank；
Wherein, described control unit controls practical water flow of the opening and closing degree up to the fertilizer spreading tank of first motor-driven valve
It is equal with the estimated fertilising flow.
2. fertilization control system according to claim 1, it is characterised in that:
It further include conductivity sensor；
The conductivity sensor is arranged on the outlet pipe of the fertilizer spreading tank, and is electrically connected with the control unit, for examining
Survey the practical water outlet conductivity of the fertilizer spreading tank；
Wherein, the practical water outlet conductivity is equal with default conductivity, then stops applying fertilizer.
3. fertilization control system according to claim 2, it is characterised in that:
It further include timing module；
The timing module is electrically connected with the control unit, for detecting practical fertilization time；
Wherein, the practical fertilization time then stops applying fertilizer with it is expected that fertilization time is equal.
4. fertilization control system according to claim 3, it is characterised in that:
It further include the second motor-driven valve, third motor-driven valve, second pressure sensor and third pressure sensor；
Second motor-driven valve and the second pressure sensor are arranged on the water inlet pipe of the fertilizer spreading tank, described for controlling
The opening and closing of water inlet pipe and the pressure for detecting the water inlet pipe；
The third motor-driven valve and the third pressure sensor are arranged on the outlet pipe of the fertilizer spreading tank, described for controlling
The opening and closing of outlet pipe and the pressure for detecting the outlet pipe.
5. fertilization control system according to claim 4, it is characterised in that:
It further include data input module and motor-driven valve control module；
The data input module is arranged between described control unit and the electronic flowmeter, the conductivity sensor；
Motor-driven valve control module setting is in described control unit and first motor-driven valve, second motor-driven valve, described
Between third motor-driven valve.
6. fertilization control system according to claim 5, it is characterised in that:
It further include input and display module；
The input and display module are electrically connected with the control unit, pre- for calculating for inputting into described control unit
The relevant parameter of meter fertilising flow.
7. the control method of -6 any fertilization control systems according to claim 1, which is characterized in that it includes following step
It is rapid:
Calculate estimated fertilising flow；
The opening and closing degree for adjusting the first motor-driven valve is equal with the estimated fertilising flow to practical fertilising flow.
8. the control method of fertilization control system according to claim 7, which is characterized in that described to calculate the flow that applies fertilizer
In method:
Input dose G, Kg；Apply fertilizer tank volume L, rises；
According to tIt applies=0.95 × G0.65×ΔP-0.98, tIt applies, the estimated fertilization time of h calculating；Wherein, Δ P is pressure difference, take 0.01~
0.02MPa；
And according to Q=4L/ (1000 × tIt applies), Q, m3/ h calculates estimated fertilising flow.
9. the control method of fertilization control system according to claim 7, which is characterized in that the first motor-driven valve of the adjusting
Opening and closing degree into the practical fertilising flow method equal with the estimated fertilising flow:
The conductivity that conductivity sensor detects practical fertilizer spreading tank water outlet is equal with the conductivity of iirigation water source, then stops applying fertilizer.
10. the control method of fertilization control system according to claim 7, which is characterized in that the adjusting first is electronic
The opening and closing degree of valve is into the practical fertilising flow method equal with the estimated fertilising flow；
Timing module detects practical fertilization time with it is expected that fertilization time is equal, then stops applying fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248145.6A CN110036741A (en) | 2019-03-29 | 2019-03-29 | Fertilization control system and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910248145.6A CN110036741A (en) | 2019-03-29 | 2019-03-29 | Fertilization control system and control method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104969708A (en) * | 2015-07-01 | 2015-10-14 | 昆明理工大学 | Variable irrigating fertilizing device, and control method thereof |
| CN107220903A (en) * | 2017-06-23 | 2017-09-29 | 深圳市盛路物联通讯技术有限公司 | A kind of reading intelligent agriculture management method and system |
| US20180111135A1 (en) * | 2015-01-19 | 2018-04-26 | Arthur J. Zito, Jr. | Nozzle with automatic adjustable aperture |
-
2019
- 2019-03-29 CN CN201910248145.6A patent/CN110036741A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180111135A1 (en) * | 2015-01-19 | 2018-04-26 | Arthur J. Zito, Jr. | Nozzle with automatic adjustable aperture |
| CN104969708A (en) * | 2015-07-01 | 2015-10-14 | 昆明理工大学 | Variable irrigating fertilizing device, and control method thereof |
| CN107220903A (en) * | 2017-06-23 | 2017-09-29 | 深圳市盛路物联通讯技术有限公司 | A kind of reading intelligent agriculture management method and system |
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